{
  "$id": "cluster.json",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "WebSphere Cluster",
  "description": "Represents a cluster of IBM WebSphere Application Server instances or Liberty collective members that work together to provide high availability, workload distribution, and failover capabilities.",
  "type": "object",
  "properties": {
    "name": {
      "type": "string",
      "description": "The unique name of the cluster."
    },
    "displayName": {
      "type": "string",
      "description": "Human-readable display name for the cluster."
    },
    "description": {
      "type": "string",
      "description": "Description of the cluster purpose and configuration."
    },
    "status": {
      "type": "string",
      "enum": ["running", "stopped", "partial", "unknown"],
      "description": "Overall cluster status based on member states."
    },
    "clusterType": {
      "type": "string",
      "enum": ["APPLICATION_SERVER", "PROXY_SERVER", "LIBERTY_COLLECTIVE"],
      "description": "Type of cluster."
    },
    "cellName": {
      "type": "string",
      "description": "Name of the cell this cluster belongs to."
    },
    "members": {
      "type": "array",
      "description": "Server instances that are members of this cluster.",
      "items": {
        "type": "object",
        "properties": {
          "serverName": {
            "type": "string",
            "description": "Name of the member server."
          },
          "nodeName": {
            "type": "string",
            "description": "Node where the member resides."
          },
          "hostName": {
            "type": "string",
            "description": "Hostname of the member."
          },
          "status": {
            "type": "string",
            "enum": ["STARTED", "STOPPED", "STARTING", "STOPPING", "UNKNOWN"],
            "description": "Current status of the cluster member."
          },
          "weight": {
            "type": "integer",
            "minimum": 0,
            "maximum": 20,
            "default": 2,
            "description": "Workload management weight for this member."
          },
          "uniqueId": {
            "type": "string",
            "description": "Unique identifier for the cluster member."
          }
        },
        "required": ["serverName"]
      }
    },
    "memberCount": {
      "type": "integer",
      "description": "Total number of members in the cluster."
    },
    "membersStarted": {
      "type": "integer",
      "description": "Number of currently running members."
    },
    "preferLocal": {
      "type": "boolean",
      "default": true,
      "description": "Whether to prefer routing requests to local cluster members."
    },
    "loadBalancingPolicy": {
      "type": "object",
      "description": "Load balancing configuration for the cluster.",
      "properties": {
        "policy": {
          "type": "string",
          "enum": ["ROUND_ROBIN", "WEIGHTED", "RANDOM"],
          "description": "Load balancing algorithm."
        },
        "stickySession": {
          "type": "boolean",
          "default": true,
          "description": "Whether to enable session affinity."
        }
      }
    },
    "scalingPolicy": {
      "type": "object",
      "description": "Auto-scaling policy for the cluster.",
      "properties": {
        "enabled": {
          "type": "boolean",
          "default": false,
          "description": "Whether auto-scaling is enabled."
        },
        "minMembers": {
          "type": "integer",
          "minimum": 1,
          "description": "Minimum number of cluster members."
        },
        "maxMembers": {
          "type": "integer",
          "description": "Maximum number of cluster members."
        },
        "scaleUpThreshold": {
          "type": "number",
          "description": "CPU or memory utilization percentage to trigger scale-up."
        },
        "scaleDownThreshold": {
          "type": "number",
          "description": "CPU or memory utilization percentage to trigger scale-down."
        },
        "cooldownPeriod": {
          "type": "integer",
          "description": "Cooldown period in seconds between scaling events."
        }
      }
    },
    "servicePolicy": {
      "type": "object",
      "description": "Service policy configuration.",
      "properties": {
        "matchCriteria": {
          "type": "string",
          "description": "Criteria for matching requests to this cluster."
        },
        "priority": {
          "type": "integer",
          "description": "Priority of this service policy."
        }
      }
    },
    "replicationDomain": {
      "type": "object",
      "description": "Data replication configuration for the cluster.",
      "properties": {
        "name": {
          "type": "string",
          "description": "Replication domain name."
        },
        "numberOfReplicas": {
          "type": "integer",
          "description": "Number of replicas for session data."
        },
        "requestTimeout": {
          "type": "integer",
          "description": "Replication request timeout in seconds."
        }
      }
    },
    "applications": {
      "type": "array",
      "description": "Applications deployed to this cluster.",
      "items": {
        "type": "string"
      }
    },
    "createdDate": {
      "type": "string",
      "format": "date-time",
      "description": "Date and time the cluster was created."
    },
    "lastModified": {
      "type": "string",
      "format": "date-time",
      "description": "Date and time the cluster was last modified."
    },
    "metadata": {
      "type": "object",
      "additionalProperties": true,
      "description": "Additional metadata associated with the cluster."
    }
  },
  "required": ["name"]
}